111results about How to "Low application cost" patented technology

The invention discloses an HSI and ranging data cross-domain classification method and system based on domain expansion and feature decoupling, and aims to solve the problems of single mode, insufficient domain offset simulation and weak generalization ability in the prior art. Preprocessing the HSI and LiDAR data to obtain a source domain sample, and generating an expansion domain sample through frequency domain amplitude disturbance and adversarial domain expansion; extracting basic features by using a multi-stream convolutional neural network, and separating domain specific features and cross-modal and cross-domain domain invariant features; and adaptively fusing the three types of features through an attention network, and inputting the preprocessed target domain data into a trained model to obtain a classification result. Through multi-modal fusion, mixed domain expansion and feature decoupling, the cross-domain classification precision and generalization ability are improved, fine adjustment of target domain data is not needed, application is flexible, and the method is suitable for multi-scene remote sensing ground feature classification.

The invention provides a hollow-core-to-hollow or solid-core-to-hollow optical fiber connection jumper wire and a preparation method thereof. The jumper wire comprises a transmission fiber and connectors connected to the two ends of the transmission fiber. The transmission fiber is a hollow-core optical fiber, the connector comprises an optical fiber fixing device and an integrated welding structure fixed in the optical fiber fixing device, the integrated welding structure comprises a transmission fiber, a coating film and a transition fiber which are fixedly connected in sequence, the coating film performs anti-reflection on a set wavelength, the transition fiber is a solid-core optical fiber, and the outer side end of the transition fiber serves as the output end of the connector; and the output ends of different connectors are oppositely arranged so as to realize transmission connection between different jumpers. Pluggable, stable and reliable connection between the hollow-core optical fibers or between the hollow-core optical fibers and the solid-core optical fibers is achieved.

The application discloses a method for degrading organic pollutants in water by using molybdenum disulfide activated potassium permanganate, which comprises sequentially adding molybdenum disulfide powder and potassium permanganate into water containing trace organic pollutants, treating for 10-90 minutes, and then removing unreacted potassium permanganate and molybdenum disulfide powder through coagulation, sedimentation and filtration in sequence; when the concentration of the trace organic pollutants in the water is 0.1-5 muM, the adding amount of the potassium permanganate is 50-300 mu mol / L, and the adding amount of the molybdenum disulfide is 25-150 mg / L; when the concentration of the trace organic pollutants in the water is greater than 5 muM, the adding amount of the potassium permanganate is 150-500 mol / L, the adding amount of the molybdenum disulfide is 50-200 mg / L, and the adding ratio of the molybdenum disulfide to the potassium permanganate is 1:(0.4-0.8). The method can enhance the degradation capacity of the potassium permanganate by adding the molybdenum disulfide, improve the removal rate of the organic pollutants, reduce the adding amount of the potassium permanganate agent, finally reduce the cost of water treatment, and effectively alleviate the chroma problem caused by a high adding amount of the potassium permanganate.

The utility model belongs to but is not limited to the field of semiconductor manufacturing technology, disclose a kind of DBC ceramic base five-foot integrated PFC power semiconductor packaging structure, including a IGBT chip, first fast recovery diode chip, second fast recovery diode chip, DBC ceramic substrate, pin assembly and package body;The IGBT chip, first fast recovery diode chip and second fast recovery diode chip are installed side by side on the metal coating surface of the DBC ceramic substrate;The pin assembly includes five pins, and the package body adopts TO-247 outer shape structure.The utility model directly uses DBC ceramic as heat sink structure, and power chip is laid side by side on it, bottom surface metal is exposed, for optimizing heat path, simplifying packaging process, with more compact structure, the advantage of lower thermal resistance.The utility model's circuit is compact, and is adapted to high-power, high-frequency application scene.

This invention discloses a herbicidal composition and its application. The composition comprises active ingredient A and active ingredient B, wherein active ingredient A is a compound of formula (I), and active ingredient B is selected from either flufenoxuron or pyrimethanil. The mass ratio of active ingredient A to active ingredient B in the composition is 1:20-10:1. This invention also relates to the use of the herbicidal composition in controlling the germination or growth of weeds in useful plants, particularly suitable for controlling the germination or growth of weeds in peanut fields.

The present application provides a kind of night image halo removal method, including constructing prior knowledge, according to prior knowledge, construct initialization network and depth unfolding network, using initialization network to extract variable initial value set from night halo pollution image;Night halo pollution image and variable initial value set are input into depth unfolding network and are operated multiple iterations, and the final halo removal image is extracted from night halo pollution image;Wherein, depth unfolding network includes multiple proximal networks, and each proximal network participates in an iteration operation.The present application makes full use of prior knowledge, uses the depth unfolding network with multiple proximal networks to iterate mapping diagram, halo-free feature map, constraint variable and halo removal image, so as to extract the final halo removal image, to better preserve image texture and restore image details, under the premise of not increasing application cost, the halo and stripe artifact in image are preferably removed.

The application discloses a kind of distributed cluster endoscope network aggregation method and endoscope system, belong to medical equipment technical field, the method is based on the system implementation, the method includes determining dispatcher and establishing the self-organizing network of system network and dispatcher election step, complete each endoscope host available resource evaluation available resource value evaluation step, determine applicant and sharer resource allocation step, applicant and sharer data interaction to realize the data transmission step of computing power sharing.This scheme can be implemented in the environment without central server, realize the dynamic computing power aggregation and task scheduling between different performance endoscope host.

This invention relates to a fluid velocity and flow rate detection device, and pertains to the field of fluid detection technology. The device includes: a fixed small steel plate and an elastic sensing unit; both the fixed small steel plate and the elastic sensing unit are disposed inside the fluid pipe to be detected; wherein, the lower end of the fixed small steel plate is fixedly connected to the inner wall of the fluid pipe, and a fixing part is provided at its upper end; the elastic sensing unit includes at least two elastic steel plates, one end of each elastic steel plate converging and connecting to the fixing part, and the elastic steel plates are radially distributed with the fixing part as the center; a first sensor is assembled at the other end of each elastic steel plate. This invention has a wide range of applicable media, strong anti-interference ability, and stable detection.

This invention provides a method for optimizing cooperative detection array positions for underwater vehicles (AUVs). It constructs a target optimization function for AUV cooperative detection array positions by coupling AUV detection errors with their own positional errors, aiming to minimize the global average detection error. This ensures that passively detected AUVs construct array positions with maximum cooperative detection accuracy. An improved HS-DPSO fusion algorithm iteratively optimizes the target optimization function. During local optimization, a dynamic inertial weight adjustment strategy combining normal distribution randomness and an adaptive expectation mechanism is employed. This allows the inertial weights to fluctuate dynamically and regularly in each iteration, enhancing the algorithm's ability to escape local optima. Furthermore, the adaptive random weight expectation value is dynamically adjusted using random numbers, avoiding the limitations of manually pre-setting fixed random weight expectation values ​​and improving the algorithm's adaptability to different detection scenarios. This method enables each passively detected AUV to quickly obtain its optimal cooperative detection position, improving the efficiency and accuracy of AUV formation cooperative detection.

The application belongs to the field of water pollution control, and discloses a preparation method and application of a flexible imprint MOFs catalyst capable of being magnetically recycled. A core-shell structure flexible imprint catalyst is synthesized by adopting a precipitation polymerization method with a magnetic Fe-MOF as a base. The catalyst has multi-target adsorption characteristics, can simultaneously and quickly target capture various sulfonamide organic matters in water, realizes efficient targeted degradation of sulfonamide organic pollutants in water, has the characteristics of magnetic recovery, can be quickly separated from the solution by an external magnetic field to realize efficient recovery and reuse of the catalyst, conforms to the green environmental protection concept, and has a good engineering application prospect.

This application discloses a method and apparatus for customizing foot pedal button functions, belonging to the field of human-computer interaction systems for surgical power devices. The method includes generating or modifying a foot pedal button function mapping table through a user configuration interface; the system reads the foot pedal button status in real time; based on the mapping table, the button status is mapped to corresponding control signals and transmitted to the functional modules of the surgical power device to drive operation. The apparatus includes a configuration module, a reading module, a mapping module, and a transmission module; a storage module and a verification module may also be added. This invention can flexibly adapt to user habits, improve operational proficiency, reduce the risk of misoperation, effectively improve surgical efficiency and quality, and has strong compatibility, making it easy to integrate and promote in existing equipment.

This utility model relates to the field of low-voltage switchgear technology, specifically an interlocking mechanism for a movable drawer unit and the movable drawer unit itself. The interlocking mechanism includes a position interlocking mechanism, comprising a position interlocking drive plate and a movable portion position locking plate. The movable portion position locking plate is located on the back of the movable drawer unit and is fixed to the movable portion. The position interlocking drive plate is positioned by embedding a positioning element into a corresponding position positioning hole on the movable portion position locking plate. The fixed and movable portions of the movable drawer unit are interlocked through the aforementioned interlocking mechanism. The advantages are: the interlocking mechanism has complete functions, low structural cost, small space occupation, and enables unit miniaturization; the use of T-shaped sliding columns and guide rails for push-guided limiting reduces the precision requirements of sheet metal parts processing, lowers costs, solves push-up failures, controls the upward tilting of the rear of the movable portion, and also increases the internal width of the unit.

The utility model discloses an integrated silicon controlled rectifier triggered by a triode, which comprises an N-type silicon substrate, a silicon controlled rectifier front P-type short base region and a triode P-type base region are arranged on the N-type silicon substrate close to the upper surface, and a silicon controlled rectifier back P-type short base region is arranged on the N-type silicon substrate close to the lower surface. The silicon controlled rectifier front P-type short base region is provided with a silicon controlled rectifier N + type emitter region and a cathode electrode arranged in the silicon controlled rectifier N + type emitter region, and the silicon controlled rectifier front P-type short base region is provided with silicon controlled rectifier gate pole metal close to the triode P-type base region. A triode N + type emitter region and triode emitter metal arranged on the surface of the triode N + type emitter region are arranged on one side of the triode P type base region, a gate electrode is arranged on the other side of the triode P type base region, and the triode emitter metal is communicated with the silicon controlled gate metal through a POLY resistor; the utility model has the advantages of simple structure, reasonable design, better anti-interference capability and reduced application cost.

The invention belongs to the technical field of oil field chemicals, and provides a polyether modified polysiloxane composite defoaming agent in the petroleum industry and a preparation method thereof.The polyether modified polysiloxane composite defoaming agent in the petroleum industry comprises lipophilic polyether modified polysiloxane (LP-PMPS), an organic silicon defoaming active component, a platinum catalyst and optional hydrophobic silicon dioxide; lipophilic polyether modified polysiloxane is used as a compatilizer and a stabilizer, a polysiloxane main chain of the lipophilic polyether modified polysiloxane is compatible with an organic silicon defoaming active component, a polyether side chain with high PO content is anchored in mineral oil, and a chemical bonding and physical compounding combined composite network active phase is formed through a one-step in-situ reaction. Dispersing in a mineral oil continuous phase to form a uniform and stable system; the defoaming agent provided by the invention meets the Q / SY17001 and Q / SY16859 standards, has the advantages of rapid defoaming, lasting foam inhibition, excellent stability and wide system adaptability, is suitable for the whole process of drilling, extraction, refining and the like in the petroleum industry, and is simple and convenient in preparation process and easy for industrial production.

This utility model discloses a double-linkage conveyor belt automatic correction assembly, belonging to the field of conveyor belt correction technology. It includes a frame, driven rollers, driving rollers, and a conveyor belt wound around them. The driven rollers are mounted on the frame at both ends via slides, with a tension rod between the slides and the frame. A correction mechanism is located between the right slide and the tension rod, including a lead screw nut and a gear shifter, which drives the right slide to move back and forth. Detection mechanisms for belt deviation are respectively installed between the left and right slides and the conveyor belt. When the conveyor belt deviates, the corresponding trigger mechanism operates, and the correction mechanism drives the right slide to slide, thereby correcting the belt deviation. When the conveyor belt deviates, the correction mechanism can automatically correct and return the conveyor belt to its original position. It features rapid intervention, high correction accuracy, and a high degree of automation. The entire correction process transmits power through the driven rollers, requiring no additional energy supply, resulting in low application costs.

The invention provides sintered ore with a coating structure and a preparation method and system.The preparation method comprises the steps that lump ore is subjected to high-temperature preheating treatment and then crushed and screened, and lump ore particles are obtained; uniformly mixing an iron-containing raw material, a CaO-containing flux, a fuel and water to obtain an outer-layer mixed material; after the lump ore particles are put into a disc pelletizer, atomized water is sprayed to the surfaces of the lump ore particles; caO is sprayed to the surfaces of lump ore particles; the outer-layer mixed material is added into a disc pelletizer, atomized water is continuously sprayed for pelletizing, screening is conducted after pelletizing is finished, and a green pellet mixed material is obtained; conveying the green pellet mixture to a sintering machine, igniting the green pellet mixture, and sintering the green pellet mixture under the condition of injecting hydrogen-rich gas to obtain high-temperature sintered ore; and hydrogen is adopted as a cooling agent to cool the high-temperature sintered ore, and pre-reduction of the high-temperature sintered ore is achieved in the cooling process. The sintered ore has high strength and air permeability, the utilization ratio of lump ore is increased, lump ore fragmentation is avoided, and therefore the metallurgical performance of the lump ore is improved.

The embodiment of the invention provides a single-channel electroencephalogram sleep analysis method and related equipment, and belongs to the technical field of electroencephalogram signal processing and sleep health monitoring. The method comprises the following steps: carrying out preprocessing and time sequence enhancement on a single-channel electroencephalogram signal; extracting local and global features by using a double-branch feature encoder; feature distribution alignment between a source domain and a target domain is realized through a double-contrast adversarial learning module in combination with cross-view time sequence contrast learning and conditional adversarial alignment; dynamically adjusting a target domain sample weight based on information gain through a learnable reweighting module so as to correct label distribution offset; and finally, high-precision sleep staging or OSAHS event detection is realized by utilizing a classifier. According to the method, the generalization ability and robustness of the model in a cross-subject scene are remarkably improved, accurate analysis can be achieved only through single-channel electroencephalogram signals, the hardware cost and the use threshold are reduced, and the method is suitable for scenes such as family sleep monitoring and telemedicine screening.

This invention discloses a foamed SiO2 enzyme array and its application in the preparation of diglyceride edible oil, belonging to the field of oleochemical technology. This invention prepares a hydrophobic foamed SiO2 carrier (MCF-C8), and loads lipases ANL, NE, and CALB separately using a physical adsorption method to prepare three functionally specific enzyme arrays. Then, a dual-coupling reaction strategy of "hydrolysis-esterification" and "glycerolysis-esterification" is constructed. ANL@MCF-C8 catalyzes the moderate hydrolysis of vegetable oil, or NE@MCF-C8 catalyzes the glycerolysis of vegetable oil, to obtain a primary diglyceride mixture. The byproduct fatty acids produced in the reaction are recovered and esterified with glycerol under the catalysis of CALB@MCF-C8 to obtain a secondary diglyceride mixture. After purification, an edible oil product with a diglyceride content of 40%~82% and a 1,3-diglyceride content of 90% is obtained. This invention achieves efficient recovery and utilization of byproduct fatty acids, improves product yield, and the enzyme array has strong stability, is easy to separate and recover, and can be reused, effectively reducing production costs.

This invention relates to the field of hydrogen embrittlement resistant workpieces, and provides a workpiece utilizing pores to resist hydrogen embrittlement and its preparation method. The preparation method includes a workpiece forming step: forming the workpiece and making the surface and / or interior of the workpiece have pores that act as hydrogen traps. The surface and / or interior of the workpiece have pores that act as hydrogen traps. The workpiece and its preparation method provided by this invention utilize pores to resist hydrogen embrittlement, by pre-setting pores within the workpiece as hydrogen traps. The pores that exist inside the workpiece beforehand have a higher binding energy with hydrogen, so hydrogen will preferentially diffuse into the internal pores during diffusion, thereby reducing the hydrogen concentration inside the workpiece and effectively alleviating hydrogen embrittlement. It does not require the addition of specific microalloying elements to improve the material's resistance to hydrogen embrittlement, and it does not need to consider the compatibility of the added elements with the material matrix, thus not being limited to one or a few fixed materials, greatly reducing application costs and having broad promotion and application value.

The invention relates to the technical field of catalysts, in particular to a palladium-nickel catalyst for synthesizing vinyl acetate and a preparation method thereof.According to the catalyst, a composite carrier of nanometer aluminum oxide and a ZSM-5 molecular sieve serves as a carrier, Pd and Ni serve as bimetallic main active components, and potassium acetate and La2O3 serve as auxiliary active components. The preparation method comprises the key steps of carrier pretreatment, step-by-step impregnation loading of active components, roasting activation in an acetic acid-containing partial pressure atmosphere and the like. A Pd-Ni system is adopted to replace a traditional expensive Pd-Au system, the cost of precious metal is remarkably reduced by 40%-50%, meanwhile, the catalytic activity, selectivity and stability of the catalyst are comprehensively improved through the synergistic effect of all the components, and the catalyst is particularly suitable for industrial production of synthesizing vinyl acetate through an ethylene gas phase method.

The invention discloses a silencing vibration stopper and an adjusting method thereof, and belongs to the technical field of vibration control. The silencing vibration stopper comprises a belleville spring set, a spring oscillator unit, a lead screw adjusting mechanism and a frequency modulation control system; the spring oscillator unit comprises a top plate, a spring oscillator and a bottom plate. The belleville spring set is arranged between the spring oscillator and a first supporting column set and a second supporting column set between the spring oscillator and the top plate and the bottom plate in a sleeving mode. The lead screw adjusting mechanism comprises an adjusting lead screw, and the adjusting lead screw can penetrate through the top plate and the spring vibrator and then is connected with the middle connecting column. The spring oscillator unit is provided with an acceleration sensor group; the frequency modulation control system collects vibration signals in real time through the acceleration sensor set, the lead screw adjusting mechanism is driven through a PID control algorithm, the pre-tightening force of the belleville spring set is dynamically adjusted, and the vibration absorption frequency is adjusted. Dynamic adjustment of the inherent frequency can be achieved, the structure is convenient and fast, the adjustment precision is high, the response speed is high, and the requirement for narrow-frequency-domain vibration suppression is met.

The invention discloses a preparation method of a Fe3O4 and plant polyphenol composite biomass-based photo-Fenton catalyst, belongs to the technical field of environmental catalytic materials, and relates to a preparation method of a biomass-based photo-Fenton catalyst. The invention aims to solve the problems of complex preparation process and high cost of the existing iron-based catalyst. The preparation method of the Fe3O4 and plant polyphenol composite biomass-based photo-Fenton catalyst comprises the following steps: 1, pretreating a biomass raw material; 2, loading iron species; 3, alkali precipitation; 4, reduction and nucleation; 5, circularly dipping and strengthening; and 6, post-treatment: collecting a product through magnetic separation, washing the product with pure water for five times, and drying the product to obtain the Fe3O4-plant polyphenol composite biomass-based photo-Fenton catalyst. The preparation method is simple and low in cost.

The application discloses an antibacterial peptide derived from the skin of bullfrog and application thereof, and the amino acid sequence of the antibacterial peptide is GSVGPVGPR (as shown in SEQ ID NO:1), and the molecular weight is 824.4504 g / mol. The antibacterial peptide has obvious inhibiting effect on Staphylococcus aureus, and can be used for preparing a medicine for preventing or inhibiting Staphylococcus aureus infection. Meanwhile, the antibacterial peptide and vitamin A have a significant synergistic bactericidal effect on Staphylococcus aureus. The antibacterial peptide and vitamin A can significantly reduce the use concentration of single component, improve the antibacterial efficiency, overcome the bacterial drug resistance problem, and can be used for preparing antibacterial medicines, skin external preparation, medical dressings, feed additives and food preservatives.

This application relates to the field of battery technology and provides a battery pack architecture and vehicle. The battery pack architecture of this application includes a power module, and a charging interface and a controller interface connected to the power module. The power module includes a first battery pack, a second battery pack, a first contactor connected between the positive terminals of both the first and second battery packs, a second contactor connected between the negative terminal of the first and second battery packs and the positive terminal of the second battery pack, and a third contactor connected between the negative terminals of both the first and second battery packs. Controlling the first, second, and third contactors to turn them on and off allows for switching between parallel and series connections between the first and second battery packs. The battery pack architecture described in this application, with two sets of battery packs, offers high reliability; if one set fails, the other can still operate. It also supports both parallel and series charging, providing good charging compatibility.

A tracked external rotor magnetic motor utilizing axial closed-circuit and open-circuit magnetic fields is disclosed. An axially magnetized annular planetary permanent magnet attracts the inner edge of a pressure-bearing elliptical steel track, creating two radial magnetic potential angles on the upper and lower sides of the track's inner edge. At the lower angle, the side poles of the annular permanent magnet are attracted by opposite-pole permanent magnets, resulting in a closed magnetic field that eliminates the magnetic force on the track, causing it to follow the magnet's movement. At the upper angle, the side poles of the annular permanent magnet have an open magnetic field, causing the permanent magnet roller to rotate under the radial magnetic potential, driving the output gear ring wheel. This closed-circuit magnetic effect forms the rotational cycle. This device not only increases the output power density but also compensates for the high friction, power loss, and noise associated with planetary rotation mechanisms. It can be widely applied in transportation, energy construction, energy conservation, and environmental protection. Its simple mechanical structure and manufacturing process make it valuable for broad industrial and commercial applications.

This invention relates to the field of semiconductor equipment manufacturing technology, specifically to a method, system, device, and medium for semiconductor equipment fault prediction based on a time-series graph neural network. The method first collects time-series operational data of each component of the equipment to form a data matrix. The data matrix is ​​then preprocessed and segmented to obtain standardized segments. Next, a time-series graph is constructed for each segment: using components as nodes, edge weights are determined based on physical connections and Pearson coefficients to form a time-series graph sequence. This sequence is then divided into training and testing sets, input into a time-series graph neural network model for training, and optimized using a cross-entropy loss function. Finally, real-time data, processed through the above steps, is input into the trained model, outputting the fault type and probability, and displaying and pushing the results. By constructing a time-series graph data structure and designing a dedicated time-series graph neural network model, accurate early fault prediction is achieved.

The utility model provides a TypeC interface communication control device and a host, and relates to the technical field of power electronics, the device comprises a TypeC interface, a discrete device control module, a switch module and a USB PHY module, the discrete device control module is used for sending a configuration channel signal based on the TypeC interface under the condition that the TypeC interface accesses a TypeC slave, and the switch module is used for switching on and switching off the configuration channel signal based on the configuration channel signal sent by the TypeC slave. Determining a direction detection output control signal and an output enable signal; the level state of the direction detection output control signal is used for representing the direction in which the TypeC slave is inserted into the TypeC interface; the output enable signal is used for representing whether the target peripheral is accessed or not; and the switch module is used for outputting a control signal to conduct a target path between the TypeC interface and the USB PHY module based on direction detection under the condition that the output enable signal is effective. According to the utility model, the application cost can be reduced.

This invention discloses an azeotropic phase change cooling rotor assembly, a Roots compressor, and a vacuum pump. The rotor assembly includes a main rotor with circumferentially shaped through-holes and an axially oriented internal through-hole on the rotor shaft. A first and a second auxiliary rotor are mounted at both ends of the main rotor. Rotor sealing plates are arranged on the inner sides of the two auxiliary rotors to seal the shaped through-holes and form a first azeotropic flow region. One end of the rotor shaft is connected to a drive motor, and the other end connects to a swirl cooling pipe with swirl fins on its outer wall, forming a second azeotropic flow region through end sealing. The first and second azeotropic flow regions are filled with an azeotropic phase change cooling medium. This invention is based on the azeotropic phase change heat transfer principle and combines a swirl cooling structure to achieve efficient heat dissipation. The overall structure is simple and compact, eliminating the need for complex cooling equipment, effectively suppressing rotor temperature rise during operation, and avoiding rotor jamming caused by high-temperature thermal expansion.

This invention discloses a Bluetooth digital key calibration and control method. The calibration method includes: acquiring self-calibration data between the digital key terminal to be calibrated and the vehicle; obtaining RSSI calibration parameters for the PS area, UnLock area, and Lock area based on the RSSI self-calibration data of the PS area, UnLock area, and Lock area, respectively. The control method includes: acquiring RSSI information between each Bluetooth anchor point on the vehicle and the digital key terminal in real time; obtaining the number of valid RSSI values ​​at the current time based on the RSSI information; determining whether the device is located in the PS area based on the number of valid RSSI values, the validity status of the RSSI values ​​of the anchor points in the vehicle, and the RSSI calibration parameters of the PS area; if the device is not located in the PS area, determining whether it is located in the UnLock area or the Lock area sequentially based on the RSSI calibration parameters of the UnLock area and the Lock area.

The liquid pesticide discharge mechanism belongs to agricultural machinery; the mechanism comprises a power driving and quantitative adjusting system composed of a motor, a motor shaft, a crank, an adjusting block and a driving rod, a quantitative liquid feeding and discharging system composed of a liquid storage cylinder, a liquid feeding check valve and a piston rod, and a liquid pesticide discharge opening and closing system composed of a transmission box, a driving plate, a rack, a gear shaft, an arc-shaped belt slot connecting rod, a connecting rod, a push-pull plate, a push-pull rod, a cross slot plate, a hanging seat, a liquid discharging cylinder, a rotating shaft, a sleeve, a semi-circular opening and closing left and right leaf plate; the mechanism has a unique, reasonable and compact structure, high precision in discharge amount control, simple and convenient operation, wide application range, strong adaptability and good versatility.